Hello. You’ve probably seen our recent free ebook by Charles Petzold called Programming Windows Phone 7, which is available here. That ebook contains three parts: Part I, “The Basics” (Chapters 1-6), Part II, “Silverlight” (Chapters 7-18), and Part III, “XNA” (Chapters 19-24). In case you’d appreciate a fully indexed print version of the content in Charles’s ebook, we’ve created two books (for sale) from the one ebook.